avahi_selinux(8) avahi SELinux Policy documentation avahi_selinux(8)

NAME avahi_selinux - Security Enhanced Linux Policy for the avahi processes

DESCRIPTION SELinux Linux secures avahi (mDNS/DNS-SD daemon implementing Apple ZeroConf architecture) processes via flexible mandatory access control.

BOOLEANS SELinux policy is customizable based on least access required. avahi policy is extremely flexible and has several booleans that allow you to manipulate the policy and run avahi with the tightest access possible.

If you want to allow Apache to communicate with avahi service via dbu, you must turn on the httpd_dbus_avahi boolean.

setsebool -P httpd_dbus_avahi 1

FILE CONTEXTS SELinux requires files to have an extended attribute to define the file type.

You can see the context of a file using the -Z option to ls

Policy governs the access confined processes have to these files. SELinux avahi policy is very flexible allowing users to setup their avahi processes in as secure a method as possible.

The following file types are defined for avahi:

avahi_exec_t

- Set files with the avahi_exec_t type, if you want to transition an executable to the avahi_t domain.

Paths: /usr/sbin/avahi-dnsconfd, /usr/sbin/avahi-autoipd, /usr/sbin/avahi-daemon

avahi_initrc_exec_t

- Set files with the avahi_initrc_exec_t type, if you want to transi- tion an executable to the avahi_initrc_t domain.

avahi_var_lib_t

- Set files with the avahi_var_lib_t type, if you want to store the avahi files under the /var/lib directory.

avahi_var_run_t

- Set files with the avahi_var_run_t type, if you want to store the avahi files under the /run directory.

Note: File context can be temporarily modified with the chcon command. If you want to permanently change the file context you need to use the semanage fcontext command. This will modify the SELinux labeling database. You will need to use restorecon to apply the labels.

PROCESS TYPES SELinux defines process types (domains) for each process running on the system

You can see the context of a process using the -Z option to ps

Policy governs the access confined processes have to files. SELinux avahi policy is very flexible allowing users to setup their avahi pro- cesses in as secure a method as possible.

The following process types are defined for avahi:

avahi_t

Note: semanage permissive -a PROCESS_TYPE can be used to make a process type permissive. Permissive process types are not denied access by SELinux. AVC messages will still be generated.

COMMANDS semanage fcontext can also be used to manipulate default file context mappings.

semanage permissive can also be used to manipulate whether or not a process type is permissive.

semanage module can also be used to enable/disable/install/remove pol- icy modules.

semanage boolean can also be used to manipulate the booleans

system-config-selinux is a GUI tool available to customize SELinux pol- icy settings.

AUTHOR This manual page was autogenerated by genman.py.

SEE ALSO selinux(8), avahi(8), semanage(8), restorecon(8), chcon(1) , setse- bool(8)

dwalsh@redhat.com avahi avahi_selinux(8)